City Grazing is a landscaping business that rents out its goats for weed abatement. Starting Sunday, Dec. 27, the public is invited to bring their ornament-free trees to City Grazing's facility at 100 Cargo Way in the Bayview to feed them to the 80 goats that reside there.

There is apparently a limit to how much the goats can eat: City Grazing says it's accepting up to 20 trees per day on specified drop-off days, so better call ahead.

The trees provide vitamins, minerals and are believed to offer natural intestinal worm prevention for the herd, according to City Grazing's website, but "More than 2 per goat is probably too many!" General manager Genevieve Church told SFGate in an email.